Okay, just got back... literally, less than 30 minutes ago from a 4/5-4/12 trip. I second KimR's opinion... we must have been in the twilight zone because we LOVED the evening EMH last Wed (4/6). We were in AK that a.m. and headed into MK around 5:30 p.m. The bus from Pop was standing room only at that time. Headed first to Crystal Palace for a PS, saw a bit of Cinderellabration and didn't really get started w/our "touring" until a bit past 7 p.m. From 7-9 p.m. we got FP's for BTMR, rode POTC, did the Treehouse (Dumb but kids had never done it), Magic Carpets, got our wristbands (which we had to show id for -- they didn't put a bracelet on our 2yo here but they insisted at Epcot she HAD to have one, so she got one there later in the week). So, we did 3 attractions in just under 2 hours. at 8:55 p.m. we rode BTMR (which we ride switched on), and by 9:05 dh was riding BTMR w/the kids for a 2nd go-round... they got to see the FW from there... cool! By 9:15 we were officially in "EMH." We stayed all the way til midnight. We walked onto HM, waited less than 10 mins for IASW, (got FP for PP at around 9:30-- SO, YES THEY DO OPEN UP FP, at least sometimes, walked right into Philharmagic as they were seating, did our FP for PP, (FP'd Pooh before jumping on PP), (checked Dumbo -- wait still looked kinda long), checked Tomorrowland for FP's... they weren't doing them, all waits were 20 mins or less, so we did Stitch (they first said our dd2 was too short, but let dh come into preshow, they never took them aside, so she ended up doing this with us... She was barely shy of the height restriction... which I don't understand anyway, so thankfully we didn't have to ride switch on this one... it was lame anyway)... walked on Buzz, walked on Tea Cups, did Pooh FP, got in line for Dumbo at 11:59, and had to wait for only one go-round. So from 8:55 to midnight (just over three hours), we did ELEVEN rides. We'd have had time for Space if we had gone on it instead of Stitch -- had we known how totally lame that was going to be. Oh, and we did all of this with me, dh and four kids ages 6, 5, 4, and 2 (plenty of bathroom breaks needed during this time too!) So, IMHO, EMH eve was great!
Friday a.m., 4/8, for the one hour of EMH, we didn't have nearly as much success. While we still enjoyed getting a jump on the day, we found Space Mtn. not running yet, so dh and dd's FP'd it, while I took the younger ones to the Tea Cups. We had time to do some character meets, rode Buzz twice, TTA and got drinks and did potty breaks, rode Golden Carousel and let the kids check out the Sword in the Stone. By then it was past 9 a.m., reg. park opening.
At Epcot, 4/7, the weather must've driven everyone out. It was totally dead. We had to show id and EVERYONE got wristbands, even our 2yo. After Illuminations, there were two mass exoduses, one for the exit, the other for Future World, M:S, TT area. We'd already done everything we wanted to do, so we ended up leaving earlier than we expected to, but it was already so dead by 7ish, that we'd walked onto everything. Nobody was coming in (it rained but not hard and there were a few cracks of lightning, but the ground was dry enough by 9p.m. to sit on it for Illuminations).
At MGM, Sat. night, it was a ghost town. Everyone seemed to clear out and/or head to Fantasmic by 7:30. We walked onto everything and were standing in front of the hat trying to figure out if we wanted to do anything else. We'd even done Sounds Dangerous we were getting so hard up to find things to do to stay in the park! My dh even let me shop!!! Not sure how EMH went once Fantasmic got out b/c we left there by 9. Park "officially closed" at 8:30. When we got back to Pop, there were people waiting to board the bus TO MGM.
We'd talked to some people that felt AK eve EMH was moderately helpful to them. And others who said the day after MGM eve EMH was totally dead in the a.m. and they found they could do a lot then.
So, I disagree w/others who say that EMH is not worth it. We never really had to wait although, the later it got, the more quickly we were able to get on rides. I never even thought to check if they were letting people on w/o bands, we weren't having any wait problems.
Even when we got to the bus stop, the line for Pop was stretched back past the empty queue and down to queue 15 (I think), Pop is queue 18. We were at the end of that line and after about 20-25 minutes we were on a bus. That was our longest line of the trip. They were sending buses every few minutes and started sending two at a time. So I think they did a good job getting everyone back home. But I did notice (Us included) there were quite a few little ones still up at midnight waiting in the bus line to get home. Don't be fooled into thinking that some parents (again, us included) will try to take advantage of EMH eve too. By the way, all four of our kids were awake and behaved their best during that EMH. They had taken nice long naps that afternoon! Go Figure... we must be raising night owls!
for all the info, DS and I will be going in JUNE we are going to try EMH at MGM and AK and MK hope all go's well for us 
That was the only time I ever saw a CM check for a band while we were there.
